Selling almost unused, top of the line, Shure MX185 lavalier condenser microphone. Currently, it goes for 277€ new at Thomann: 
thomann.de/intl/shure_mx185_lavaliermikrofon.htm

All of the original accessories and packaging are included. There are only some minor cosmetic scratches on the phantom adapter enclosure, as you'll notice in the photos, which is very normal for these microphones due to the design of the adapter - it's almost unavoidable to not scratch them there. However, other than the minor colour imperfection, the microphone feels as a brand new unit!    

Below are some specs from the manufacturer side: 

The Microflex Lavalier microphones have a new standard in the field of voice transmission. Like all microflex microphones, the Lavalier microphones use the replaceable, permanently polarised condensate capsules in cardioid, super cardioid and omnidirectional polar patterns. This gives the right combination for almost every application.

• Polar pattern: Cardioid
• Lavalier microphone with interchangeable, permanently polarised condensate capsule
• Cable (120 cm) with TQG plug
• Mic preamp with TQG plug
• Transmission range: 50 Hz - 17 kHz
• Output Impedance: 180 Ohm
• Noise sensitivity: -35.0 dBV / Pa (17.8 mV)
• Maximum sound pressure level (1 kHz at 1% distortion factor, 1 kO load): 124.2 dB SPL
• Noise (equivalent sound pressure level): 28.0 dB
• Common mode rejection: at least 45.0 dB
• Dimensions (L x Ø): 22 x 12 mm
• Power supply: 11 to 52 V
• Power consumption: 2 mA
• Temperature range: -18 ° to 57 ° C
• Relative humidity: 0 to 95%
• Including belt clip, wind protection
• Including single (RK183T1) and double (RK183T2) necktie clip and pocket